165167508377 has 4 divisors (see below), whose sum is σ = 165190119696. Its totient is φ = 165144897060.

The previous prime is 165167508353. The next prime is 165167508397. The reversal of 165167508377 is 773805761561.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-165167508377 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (165167508347) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11294699 + ... + 11309312.

It is an arithmetic number, because the mean of its divisors is an integer number (41297529924).

Almost surely, 2^165167508377 is an apocalyptic number.

It is an amenable number.

165167508377 is a deficient number, since it is larger than the sum of its proper divisors (22611319).

165167508377 is an equidigital number, since it uses as much as digits as its factorization.

165167508377 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22611318.

The product of its (nonzero) digits is 7408800, while the sum is 56.

The spelling of 165167508377 in words is "one hundred sixty-five billion, one hundred sixty-seven million, five hundred eight thousand, three hundred seventy-seven".